package com.mmall.concurrency.example.aqs;

import lombok.extern.slf4j.Slf4j;

import java.util.concurrent.CountDownLatch;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;

@Slf4j
public class CountDownLatchExample2 {

    private final static int threadCount = 200;

    public static void main(String[] args) throws Exception{
        ExecutorService exec = Executors.newCachedThreadPool();
        final CountDownLatch countDownLatch  = new CountDownLatch(threadCount);
        for(int i = 0;i<threadCount; i++){
            final int threadNum = i;
            exec.execute(()->{
                try {
                    test(threadNum);
                } catch (Exception e) {
                    log.error("exception",e);
                }finally{
                    countDownLatch.countDown();
                }

            });
        }
        countDownLatch.await(10, TimeUnit.MILLISECONDS);
        log.info("finish");
        exec.shutdown();
    }
    private static void test(int threadNum) throws  Exception{
        Thread.sleep(8);
        log.info("{}",threadNum);
    }
}
